A color block seedling soft and thin container matrix filling machine

Abstract

The present invention provides a color block seedling soft and thin container matrix filling machine, which belongs to the technical field of seedling cultivation equipment, and includes a fixed frame and a soft and thin container arrangement frame, wherein the fixed frame is installed on a walking mechanism, and the soft and thin container arrangement frame is provided with a plurality of placement slots, and the fixed frame is provided with a first longitudinal driving mechanism, a movable frame and a first driving mechanism, and the movable frame is provided with a container bracket, and the container bracket is provided with at least one row of through holes, and the container bracket is provided with a container placement guide cavity above each through hole; the movable frame is also provided with a push plate and a second driving mechanism; an electric-controlled suction cup is provided next to each through hole, and the movable frame is also provided with a second longitudinal driving mechanism. The present invention can realize the automatic placement and filling of soft and thin containers, and can effectively improve the placement and filling efficiency of soft and thin containers, and at the same time, the soft and thin containers are placed very neatly.

Description

Technical Field

[0001] The invention belongs to the technical field of seedling cultivation equipment, and in particular relates to a soft and thin container matrix filling machine for color block seedlings. Background Art

[0002] Color block planting is a common combination method in landscaping applications, and small colorful shrubs that are resistant to pruning are the most common configuration plants. In landscaping applications, the most commonly used colors for color block seedlings are red, yellow, and green. Common color block seedlings include Photinia fraseri, Berberis rubrum, and Cypress chinensis. When cultivating these color block seedlings, you need to use soft and thin containers, such as nutrient pots, fill the soft and thin containers with substrates, and arrange the soft and thin containers neatly. In the traditional way, soft and thin containers are generally filled and arranged neatly by hand, which is very inefficient. Summary of the invention

[0003] In view of the above-mentioned drawbacks, the present invention provides a color block seedling soft and thin container matrix filling machine, which can realize automatic placement and filling of soft and thin containers, and can effectively improve efficiency.

[0004] The inventive objective of the present invention is achieved through the following technical solutions: a color block seedling soft and thin container matrix filling machine, comprising a fixed frame and a soft and thin container arranging frame, the soft and thin container arranging frame is provided with a plurality of placement grooves distributed in a rectangular array and used to place the soft and thin containers, the placement grooves penetrate the upper and lower end surfaces of the soft and thin container arranging frame, the fixed frame is provided with a first longitudinal driving mechanism for driving the soft and thin container arranging frame to rise and fall longitudinally; the fixed frame is provided with a movable frame that can move horizontally along the front and rear directions of the fixed frame and a first driving mechanism for driving the movable frame to move, the movable frame is fixedly provided with a container bracket, the container bracket is provided with at least one row of through holes, and the container bracket is provided with a container placement guide cavity for placing the soft and thin containers above each through hole, and when the soft and thin containers are stacked in the container placement guide cavity, the bottom of the lowest soft and thin container passes through the through hole; as the first driving mechanism drives the movable frame The movement of the movable frame can enable the container holder to move to the top of the soft and thin container arrangement rack and align the through holes on the container holder with any row of placement slots one by one; the movable frame is also provided with a push plate for pushing the soft and thin container passing through the through holes upward and a second driving mechanism for driving the push plate to push the soft and thin container; an electric-controlled suction cup for adsorbing the soft and thin container is provided next to each through hole below, and the movable frame is also provided with a second longitudinal driving mechanism for driving the electric-controlled suction cup to rise and fall; a material box for storing the matrix, a material trough and a conveyor belt for conveying the matrix are also fixedly provided on the movable frame, a discharge port is provided at the bottom of the material box, the conveyor belt is located below the discharge port and the conveyor belt can convey the matrix coming out of the discharge port into the material trough, a discharge pipe is fixedly provided at the bottom of the material trough, and as the movable frame moves, the discharge pipe can move to the top of the soft and thin container arrangement rack and can align with any row of placement slots one by one;

[0005] Preferably, a stirring mechanism is provided in the material box to prevent the internal matrix from blocking the discharge port.

[0006] Preferably, the stirring mechanism comprises a rotating rod passing through the material box, a stirring blade is fixedly provided on the rotating rod, and a second motor for driving the rotating rod to rotate is fixedly provided outside the material box.

[0007] Preferably, the material box is provided with a vertical through groove penetrating the inner and outer side walls of the material box, and a transparent plate is fixedly provided at the position of the vertical through groove.

[0008] Preferably, the first longitudinal driving mechanism includes two X-shaped connecting arms symmetrically distributed on both sides of the soft and thin container arrangement rack, the X-shaped connecting arm includes two rotatably connected connecting rods, and the ends of the connecting rods are vertically fixedly connected with a swivel pin. The fixed frame and the soft and thin container arrangement rack are both provided with transversely arranged waist-shaped holes, and the waist-shaped holes correspond to the swivel pins one by one. The swivel pins extend into the corresponding waist-shaped holes and the swivel pins can rotate in the corresponding waist-shaped holes and can move along the waist-shaped holes. The soft and thin container arrangement rack or the fixed frame is provided with a first cylinder for driving the X-shaped connecting arm to expand and contract.

[0009] Preferably, the fixed frame is a square frame structure, and a strip groove is provided on each side of the fixed frame. The first driving mechanism includes a rack fixed in the strip groove and arranged along the length direction of the strip groove, a rotating shaft rotatably arranged on the movable frame and perpendicular to the rack, a gear meshing with the rack is fixed at the end of the rotating shaft, and a third motor for driving the rotating shaft to rotate is also fixed on the movable frame; rollers are rotatably connected to both sides of the movable frame, and the rollers on both sides of the movable frame are respectively located in the two strip grooves and the rollers can roll in the strip grooves.

[0010] Preferably, at least three mutually parallel vertical rods are fixedly provided around the upper end of each through hole on the container bracket, and the space between the vertical rods serves as a guide cavity for placing the container.

[0011] Preferably, the second longitudinal driving mechanism comprises a transversely arranged lifting plate, the electric-controlled suction cup is fixedly mounted on the lifting plate, and the movable frame is also fixedly provided with a second cylinder for driving the lifting plate to move up and down longitudinally.

[0012] Preferably, the push plate is rotatably arranged on the movable frame, the second driving mechanism includes a third cylinder arranged on the movable frame, a connecting rod is rotatably connected to the piston rod of the third cylinder, and the other end of the connecting rod is rotatably connected to the movable frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects: the present invention can realize the automatic placement and filling of soft and thin containers, can effectively improve the placement and filling efficiency of soft and thin containers, and at the same time, the soft and thin containers are placed very neatly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of the present invention installed on a walking device;

[0015] Figure 2 It is a stereogram of the present invention;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 It is a three-dimensional diagram from another angle of the present invention;

[0018] Figure 5 It is a schematic diagram of the connection structure between the push plate, the third cylinder and the connecting rod;

[0019] Figure 6 It is a three-dimensional diagram of the stirring mechanism;

[0020] Figure 7 It is a three-dimensional diagram of the walking device;

[0021] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0022] Markings in the figure: 1, fixed frame, 2, soft and thin container arrangement frame, 3, strip groove, 4, placement groove, 5, X-shaped connecting arm, 6, connecting rod, 7, rotating pin, 8, waist-shaped hole, 9, first cylinder, 10, movable frame, 11, rack, 12, rotating shaft, 13, gear, 14, third motor, 15, roller, 16, container bracket, 17, vertical rod, 18, push plate, 19, third cylinder, 20, connecting rod, 21, electric control suction cup, 22, lifting plate, 23 , the second cylinder, 24, the material box, 25, the material trough, 26, the conveyor belt, 27, the rotating rod, 28, the stirring blade, 29, the second motor, 30, the vertical through slot, 31, the discharge pipe, 32, the rotary blade, 33, the first motor, 34, the inclined conveyor, 35, the power chassis, 36, the seat, 37, the vertical support shaft, 38, the crossbeam, 39, the cushion, 40, the first diagonal rod, 41, the track, 42, the movable block, 43, the second diagonal rod, 44, the cross bar. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0024] Example 1

[0025] like Figure 1-Figure 8As shown, a color block seedling soft and thin container matrix filling machine comprises a fixed frame 1 and a soft and thin container arrangement frame 2, a strip groove 3 is respectively arranged on both sides of the fixed frame 1, a plurality of placement grooves 4 distributed in a rectangular array and used for placing soft and thin containers are arranged on the soft and thin container arrangement frame 2, the placement grooves 4 pass through the upper and lower end surfaces of the soft and thin container arrangement frame 2, the fixed frame 1 is provided with a first longitudinal driving mechanism for driving the soft and thin container arrangement frame 2 to rise and fall longitudinally, the first longitudinal driving mechanism comprises two X-shaped connecting arms 5 symmetrically distributed on both sides of the soft and thin container arrangement frame 2, the X-shaped connecting arm 5 comprises two rotatably connected connecting rods 6, and a rotating pin 7 is vertically fixedly connected to the end of the connecting rod 6, the fixed frame 1 and the soft and thin container arrangement frame 2 are both provided with transversely arranged waist-shaped holes 8, the waist-shaped holes 8 correspond to the rotating pins 7 one by one, the rotating pins 7 extend into the corresponding waist-shaped holes 8 and the rotating pins 7 can rotate in the corresponding waist-shaped holes 8 and can move along the waist-shaped holes 8, the soft and thin container arrangement frame 2 is provided with a first cylinder 9 for driving the X-shaped connecting arm 5 to expand and contract.

[0026] The fixed frame 1 is provided with a movable frame 10 that can move horizontally along the front and rear directions of the fixed frame 1 and a first driving mechanism for driving the movable frame 10 to move, the first driving mechanism includes a rack 11 fixed in the strip groove 3 and arranged along the length direction of the strip groove 3, a rotating shaft 12 rotatably arranged on the movable frame 10 and perpendicular to the rack 11, a gear 13 meshing with the rack 11 is fixed at the end of the rotating shaft 12, and a third motor 14 for driving the rotating shaft 12 to rotate is also fixed on the movable frame 10; rollers 15 are rotatably connected on both sides of the movable frame 10, and the rollers 15 on both sides of the movable frame 10 are respectively located in the two strip grooves 3 and the rollers 15 can roll in the strip grooves 3.

[0027] A container holder 16 is fixedly provided on the movable frame 10, and a row of through holes is provided on the container holder 16. A container placement guide cavity for placing a soft and thin container is provided above each through hole on the container holder 16. Four mutually parallel vertical rods 17 are fixedly provided around the upper end of each through hole on the container holder 16, and the space between the vertical rods 17 serves as the container placement guide cavity. When the soft and thin containers are stacked in the container placement guide cavity, the bottom of the lowest soft and thin container passes through the through hole; as the first driving mechanism drives the movable frame 10 to move, the container holder 16 can be moved to the top of the soft and thin container arrangement frame 2 and the through holes on the container holder 16 are aligned one by one with any row of placement slots 4; the movable frame 10 is also provided with a push plate 18 for pushing the soft and thin container passing through the through hole upward and a second driving mechanism for driving the push plate 18 to push the soft and thin container, the push plate 18 is rotatably arranged on the movable frame 10, and the second driving mechanism includes a third cylinder 19 arranged on the movable frame 10, and a connecting rod 20 is rotatably connected to the piston rod of the third cylinder 19, and the other end of the connecting rod 20 is rotatably connected to the movable frame 10.

[0028] An electric suction cup 21 for adsorbing a soft and thin container is arranged beside each through hole. A second longitudinal driving mechanism for driving the electric suction cup 21 to rise and fall is also arranged on the movable frame 10. The second longitudinal driving mechanism includes a transversely arranged lifting plate 22. The electric suction cup 21 is fixedly mounted on the lifting plate 22. A second cylinder 23 for driving the lifting plate 22 to rise and fall longitudinally is also fixedly arranged on the movable frame 10. A material box 24 for storing a matrix, a material trough 25, and a conveyor belt 26 for conveying a matrix are also fixedly arranged on the movable frame 10. A discharge port is arranged at the bottom of the material box 24. The conveyor belt 26 is located below the discharge port and can convey the matrix from the discharge port to the material trough 25. A stirring mechanism is arranged inside the material box 24 to prevent the internal matrix from blocking the discharge port. The stirring mechanism includes a rotating rod 27 passing through the material box 24. A stirring blade 28 is fixedly arranged on the rotating rod 27. A second motor 29 for driving the rotating rod 27 to rotate is fixedly arranged outside the material box 24. The material box 24 is provided with a vertical through slot 30 that penetrates the inner and outer side walls of the material box 24, and a transparent plate is fixedly provided at the position of the vertical through slot 30. The remaining amount of the substrate inside the material box 24 can be observed through the transparent plate.

[0029] A discharge pipe 31 is fixedly provided at the bottom of the material trough 25 . With the movement of the movable frame 10 , the discharge pipe 31 can move to the top of the soft and thin container arrangement frame 2 and can be aligned with any row of placement slots 4 one by one.

[0030] In order to be able to continuously place soft and thin containers, the present invention needs to be installed on a walking device for use. The fixed frame 1 is installed on the walking device and the fixed frame 1 is a square frame structure. A substrate feeding mechanism is provided at the front end of the walking device. The substrate feeding mechanism includes a rotary tiller 32 arranged at the front end of the walking mechanism and a first motor 33 for driving the rotary tiller 32 to rotate. The soil turned over by the rotary tiller 32 is the substrate. An inclined conveyor 34 is also provided between the rotary tiller 32 and the material box 24 for transporting the substrate turned over by the rotary tiller 32 to the material box 24.

[0031] The walking device includes a power chassis 35, on which a seat 36 located at the rear side of the fixing frame 1 is installed. The seat 36 includes a vertical support shaft 37 installed on the power chassis 35 and can only rotate. The upper end of the vertical support shaft 37 is vertically fixedly connected to a crossbeam 38 extending toward one side of the vertical support shaft 37. A seat cushion 39 is fixedly installed on the crossbeam 38. A first oblique rod 40 is fixedly connected between the lower end of the crossbeam 38 and the vertical support shaft 37. The area surrounded by the vertical support shaft 37, the crossbeam 38 and the first oblique rod 40 is a three-dimensional space. The lower end of the power chassis 35 is fixed with a circular track 41 arranged around the vertical support shaft 37, and a movable block 42 that can only move along the track 41 is arranged on the track 41. The vertical support shaft 37 is also fixed with a second inclined rod 43 and a cross rod 44 located below the power chassis 35. One end of the second inclined rod 43 and one end of the cross rod 44 are fixedly connected and the fixed connection is fixed on the movable block 42. The area formed by the second inclined rod 43, the cross rod 44 and the vertical support shaft 37 is a triangular structure. The cross rod 44 and the cross beam 38 are respectively located on the same side of the vertical support shaft 37.

[0032] The use principle of the present invention is as follows:

[0033] The soft and thin containers stacked on the container bracket 16 are placed in the guide cavity, and the bottom of the lowest soft and thin container passes through the through hole. When the walking device moves forward, the substrate feeding mechanism works, and the first motor 33 drives the rotary tiller 32 to rotate. When the rotary tiller 32 rotates, the soil in the ground will be turned over and the rotary tiller 32 can also play a role in leveling the land. The turned soil will be transported to the material box 24 along the inclined conveyor 34 and used as a substrate for filling the soft and thin containers. When the soft and thin container arrangement rack 2 moves to the position where the soft and thin containers need to be placed, the walking device is controlled to stop moving.

[0034] Then, the first longitudinal driving mechanism is controlled to expand, that is, the first cylinder 9 is controlled to drive the X-shaped connecting arm to expand, so that the soft and thin container arrangement rack 2 moves downward to approach the soil or is directly placed on the soil, at which time the upper end of the soft and thin container arrangement rack 2 is lower than the lower end of the discharge pipe 31 or is flush with the lower end of the discharge pipe 31;

[0035] Then, the first driving mechanism is controlled to drive the movable frame 10 to move toward the rear end of the fixed frame 1, that is, the third motor 14 is controlled to work, and the third motor 14 drives the rotating shaft 12 to rotate, and then drives the gear 13 to rotate. Since the gear 13 is meshed with the rack 11, the movable frame 10 will move along the length direction of the rack 11 until the container bracket 16 moves to the top of the soft and thin container arrangement rack 2 and the through holes on the container bracket 16 are aligned one by one with the first row of placement slots 4;

[0036] Next, the second driving mechanism is controlled to drive the push plate 18 to rotate, and the push plate 18 pushes the soft and thin container to rise up along the container placement guide cavity. Then the second driving mechanism drives the push plate 18 to rotate in the opposite direction to the initial position. At this time, the soft and thin container falls. Using the push plate 18 to push the soft and thin container upward first can reduce the possibility of the soft and thin container being stuck in the container placement guide cavity, and at the same time, it can also make the stacked soft and thin containers fall to a lower position each time so that they can be adsorbed by the electric control suction cup 21.

[0037] Then, the second longitudinal driving mechanism is controlled to drive the electric-controlled sucker 21 to move upward, that is, the second cylinder 23 is controlled to drive the lifting plate 22 to move upward, so that the electric-controlled sucker 21 is close to the soft and thin container at the bottom. At this time, the electric-controlled sucker 21 is controlled to work, and the electric-controlled sucker 21 absorbs the soft and thin container at the bottom. Then, the second cylinder 23 is controlled to drive the lifting plate 22 to move downward so that the soft and thin container absorbed by the electric-controlled sucker 21 is close to the soft and thin container arrangement rack 2. At this time, the electric-controlled sucker 21 is controlled to stop working. Under the action of gravity, the soft and thin container can fall into the first row of placement slots 4 on the soft and thin container arrangement rack 2, so that the soft and thin container is placed;

[0038] Then, the first driving mechanism is controlled to drive the movable frame 10 to move toward the rear end of the fixed frame 1, so that the discharge pipe 31 moves to a position aligned with the first row of placement slots 4, and the conveyor belt 26 is controlled to work, so that the conveyor belt 26 can drive the matrix to be transported into the material trough 25, and the matrix in the material trough 25 will fall into the soft thin container in the first row of placement slots 4 along the discharge pipe 31, so as to realize the filling of the matrix in the soft thin container;

[0039] By repeating the above method, the soft and thin containers can be arranged in sequence and filled with the matrix. When the placement grooves 4 on the soft and thin container arrangement rack 2 are full of soft and thin containers, the first longitudinal driving mechanism is controlled to fold to lift the soft and thin container arrangement rack 2 upward. Since the placement grooves 4 penetrate the soft and thin container arrangement rack 2, the soft and thin containers filled with the matrix will remain on the soil ground. At this time, the walking device can continue to be controlled to move forward to move the soft and thin container arrangement rack 2 to the empty soil ground, and the soft and thin containers can continue to be placed and filled with the matrix.

[0040] In the present application, a seat 36 is installed on the power chassis 35 of the walking device, and workers can sit on the seat 36 to observe the placement and filling of the soft and thin containers in the soft and thin container arrangement rack 2, which is very convenient. The seat 36 is rotatably installed on the power chassis 35, which is convenient for workers to rotate the angle to observe the situation in the soft and thin container arrangement rack 2 when sitting on the seat 36. At the same time, in the seat 36, the vertical support shaft 37 and the cross beam 38 are reinforced by setting a first inclined rod 40 to improve the bearing capacity of the seat cushion 39. The second inclined rod 43 and the cross rod 44 are fixed at the lower end of the vertical support shaft 37 and fixed on the movable block 42, and the movable block 42 can only move along the track 41. Therefore, when someone sits on the seat cushion 39, the second inclined rod 43 and the cross rod 44 generate a pulling force on the vertical support shaft 37, which is conducive to the vertical support shaft 37 to maintain a vertical state, so that the rotation of the seat 36 on the power chassis 35 is more stable.

[0041] It should be understood that in the claims and description of the present invention, all "including..." should be understood as an open-ended meaning, that is, its meaning is equivalent to "at least contains...", and should not be understood as a closed meaning, that is, its meaning should not be understood as "only includes...".

[0042] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A color block seedling soft thin container matrix filling machine, characterized in that: It comprises a fixed frame and a soft and thin container arrangement frame, the soft and thin container arrangement frame is provided with a plurality of placement grooves distributed in a rectangular array and used to place the soft and thin containers, the placement grooves penetrate the upper and lower end surfaces of the soft and thin container arrangement frame, the fixed frame is provided with a first longitudinal driving mechanism for driving the soft and thin container arrangement frame to lift and lower longitudinally, the first longitudinal driving mechanism comprises two X-shaped connecting arms symmetrically distributed on both sides of the soft and thin container arrangement frame, the X-shaped connecting arm comprises two rotatably connected connecting rods, the ends of the connecting rods are vertically fixedly connected with a rotating pin, the fixed frame and the soft and thin container arrangement frame are both provided with transversely arranged waist-shaped holes, the waist-shaped holes correspond to the rotating pins one by one, the rotating pins extend into the corresponding waist-shaped holes and the rotating pins can rotate in the corresponding waist-shaped holes and can move along the waist-shaped holes, the soft and thin container arrangement frame or the fixed frame is provided with a first cylinder for driving the X-shaped connecting arm to expand and contract; The fixed frame is a square frame structure, with a strip groove on each of the two sides of the fixed frame, a movable frame that can move horizontally along the front and rear direction of the fixed frame and a first driving mechanism for driving the movable frame to move, the first driving mechanism includes a rack fixed in the strip groove and arranged along the length direction of the strip groove, a rotating shaft rotatably arranged on the movable frame and perpendicular to the rack, a gear meshing with the rack is fixed at the end of the rotating shaft, and a third motor for driving the rotating shaft to rotate is also fixed on the movable frame; rollers are rotatably connected to the two sides of the movable frame, and the rollers on both sides of the movable frame are respectively located in the two strip grooves and the rollers can roll in the strip grooves; The movable frame is fixedly provided with a container holder, the container holder is provided with at least one row of through holes, and the container holder is provided with a container placement guide cavity for placing the soft and thin container above each through hole, and the container holder is fixedly provided with at least three vertical rods parallel to each other around the upper end of each through hole, and the space between the vertical rods serves as the container placement guide cavity, and when the soft and thin containers are stacked in the container placement guide cavity, the bottom of the lowest soft and thin container passes through the through hole; as the first driving mechanism drives the movable frame to move, the container holder can be moved to the top of the soft and thin container arrangement rack and the through holes on the container holder are aligned one by one with any row of placement grooves; the movable frame is also provided with a push plate for pushing the soft and thin containers passing through the through holes upward and a second driving mechanism for driving the push plate to push the soft and thin containers, the push plate is rotatably arranged on the movable frame, and the second driving mechanism includes a third cylinder arranged on the movable frame, and the piston rod of the third cylinder is rotatably connected to a connecting rod, and the other end of the connecting rod is rotatably connected to the movable frame; An electric-controlled suction cup for adsorbing a soft and thin container is arranged beside each through hole, and a second longitudinal driving mechanism for driving the electric-controlled suction cup to rise and fall is arranged on the movable frame, and the second longitudinal driving mechanism comprises a transversely arranged lifting plate, and the electric-controlled suction cup is fixedly mounted on the lifting plate, and a second cylinder for driving the lifting plate to rise and fall longitudinally is also fixedly arranged on the movable frame; The movable frame is also fixedly provided with a material box for storing the matrix, a material trough and a conveyor belt for conveying the matrix. A discharge port is provided at the bottom of the material box, and the conveyor belt is located below the discharge port and can convey the matrix out of the discharge port to the material trough. A discharge pipe is fixedly provided at the bottom of the material trough. With the movement of the movable frame, the discharge pipe can move to the top of the soft and thin container arrangement rack and can be aligned one by one with any row of placement troughs.

2. A color block seedling soft thin container matrix filling machine according to claim 1, characterized in that: The material box is provided with a stirring mechanism to prevent the internal matrix from blocking the material outlet.

3. A color block seedling soft thin container matrix filling machine according to claim 2, characterized in that: The stirring mechanism comprises a rotating rod passing through the material box, a stirring blade is fixedly arranged on the rotating rod, and a second motor for driving the rotating rod to rotate is fixedly arranged outside the material box.

4. A color block seedling soft thin container matrix filling machine according to claim 1, 2 or 3, characterized in that: The material box is provided with a vertical through slot which runs through the inner and outer side walls of the material box, and a transparent plate is fixedly provided at the position of the vertical through slot.

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